New species of rainfrog of the Eleutherodactylus milesi species group (Anura : Leptodactylidae) from Guatemala

A new rainfrog of the Eleutherodactylus milesi group is described from the Sierra de Xucaneb, Guatemala. it is compared to the other it upland species from southern Mexico, Guatemala and Honduras referred to the group. Within the milesi group the new species differs from the other five forms which a lso have toe fringes in size of the finger disks, the snout shape in profil e and the amount of toe webbing and dorsal tuberculation. Difficulties in d istinguishing among the character states for the tympanum (distinct, indist inct and hidden) and between toe ridges and fringes indicate that very subt le differences separate recognized species.